250 University Ave, Suite 235
Toronto, ON M5H 3E5 Canada

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P 437.537.5700

Toronto Leaders

Frank Di Roma, OAA, MRAIC


Frank leads the firm’s continued growth in Canada and oversees the management of the Toronto, Vaughan and Ottawa offices.

Christina Kolkas, PMP, BCIN, LEED AP NC + CI

Regional Director, Interior Architecture & Design

Christina is responsible for the leadership of Vaughan, Toronto and Ottawa Interior Architecture & Design studios.

David Newson, PE, MBA

Civil Engineering Manager

David is responsible for the growth and management of civil engineering services for the Ontario market.

Amanda Sanabria, OAA, OAQ, LEED AP

Studio Manager, Advanced Manufacturing

Amanda helps lead the Advanced Manufacturing Studio for the Vaughan and Toronto offices and manages select projects.

Marla Schwisberg, ARIDO, BCIN, WELL AP, LEED Green Associate

Studio Manager, Interior Architecture & Design

Marla helps lead the Interior Architecture & Design Studio and manages select projects.